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<div class="title">qwt_spline_local.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_spline_local.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_spline_parametrization.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;qwt_spline_polynomial.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qpainterpath.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> qwtIsStrictlyMonotonic( <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> dy2 )</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;{</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;    <span class="keywordflow">if</span> ( dy1 == 0.0 || dy2 == 0.0 )</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keywordflow">return</span> ( dy1 &gt; 0.0 ) == ( dy2 &gt; 0.0 );</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;}</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeLine( <span class="keyword">const</span> QPointF&amp; p1, <span class="keyword">const</span> QPointF&amp; p2 )</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;{</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="comment">// ???</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dx = p2.x() - p1.x();</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="keywordflow">return</span> dx ? ( p2.y() - p1.y() ) / dx : 0.0;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;}</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeCardinal(</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;{</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    Q_UNUSED(s1)</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    Q_UNUSED(s2)</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordflow">return</span> ( dy1 + dy2 ) / ( dx1 + dx2 );</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;}</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160; </div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeParabolicBlending(</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;{</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    Q_UNUSED( dy1 )</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    Q_UNUSED( dy2 )</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordflow">return</span> ( dx2 * s1 + dx1 * s2 ) / ( dx1 + dx2 );</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;}</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopePChip(</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;{</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="keywordflow">if</span> ( qwtIsStrictlyMonotonic( dy1, dy2 ) )</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    {</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="comment">// weighting the slopes by the dx1/dx2</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> w1 = ( 3 * dx1 + 3 * dx2 ) / ( 2 * dx1 + 4 * dx2 );</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> w2 = ( 3 * dx1 + 3 * dx2 ) / ( 4 * dx1 + 2 * dx2 );</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        s1 *= w1;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        s2 *= w2;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160; </div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        <span class="comment">// harmonic mean ( see https://en.wikipedia.org/wiki/Pythagorean_means )</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="keywordflow">return</span> 2.0 / ( 1.0 / s1 + 1.0 / s2 );</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <span class="comment">// the same as above - but faster</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160; </div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s12 = ( dy1 + dy2 ) / ( dx1 + dx2 );</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordflow">return</span> 3.0 * ( s1 * s2 ) / ( s1 + s2 + s12 );</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    }</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="keywordflow">return</span> 0.0;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;}</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="keyword">namespace </span>QwtSplineLocalP</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;{</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keyword">class </span>PathStore</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    {</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;      <span class="keyword">public</span>:</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> init( <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; )</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        {</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        }</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160; </div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> start( <span class="keyword">const</span> QPointF&amp; p0, <span class="keywordtype">double</span> )</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        {</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;            path.moveTo( p0 );</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        }</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> addCubic( <span class="keyword">const</span> QPointF&amp; p1, <span class="keywordtype">double</span> m1,</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;            <span class="keyword">const</span> QPointF&amp; p2, <span class="keywordtype">double</span> m2 )</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        {</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> dx3 = ( p2.x() - p1.x() ) / 3.0;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160; </div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;            path.cubicTo( p1.x() + dx3, p1.y() + m1 * dx3,</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                p2.x() - dx3, p2.y() - m2 * dx3,</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;                p2.x(), p2.y() );</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        }</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        QPainterPath path;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    };</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <span class="keyword">class </span>ControlPointsStore</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;      <span class="keyword">public</span>:</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> init( <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points )</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        {</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;            <span class="keywordflow">if</span> ( points.size() &gt; 0 )</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;                controlPoints.resize( points.size() - 1 );</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;            m_cp = controlPoints.data();</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> start( <span class="keyword">const</span> QPointF&amp;, <span class="keywordtype">double</span> )</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        {</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        }</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> addCubic( <span class="keyword">const</span> QPointF&amp; p1, <span class="keywordtype">double</span> m1,</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            <span class="keyword">const</span> QPointF&amp; p2, <span class="keywordtype">double</span> m2 )</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">double</span> dx3 = ( p2.x() - p1.x() ) / 3.0;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            QLineF&amp; l = *m_cp++;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            l.setLine( p1.x() + dx3, p1.y() + m1 * dx3,</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                p2.x() - dx3, p2.y() - m2 * dx3 );</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        }</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160; </div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <a class="code" href="class_q_vector.html">QVector&lt; QLineF &gt;</a> controlPoints;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;      <span class="keyword">private</span>:</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        QLineF* m_cp;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    };</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keyword">class </span>SlopeStore</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    {</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;      <span class="keyword">public</span>:</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="keywordtype">void</span> init( <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points )</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            slopes.resize( points.size() );</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            m_m = slopes.data();</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        }</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> start( <span class="keyword">const</span> QPointF&amp;, <span class="keywordtype">double</span> m0 )</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        {</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            *m_m++ = m0;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        }</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> addCubic( <span class="keyword">const</span> QPointF&amp;, <span class="keywordtype">double</span>,</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            <span class="keyword">const</span> QPointF&amp;, <span class="keywordtype">double</span> m2 )</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        {</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            *m_m++ = m2;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        }</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        <a class="code" href="class_q_vector.html">QVector&lt; double &gt;</a> slopes;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;      <span class="keyword">private</span>:</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        <span class="keywordtype">double</span>* m_m;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    };</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keyword">struct </span>slopeCardinal</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    {</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> value( <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1,</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        {</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;            <span class="keywordflow">return</span> qwtSlopeCardinal( dx1, dy1, s1, dx2, dy2, s2 );</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        }</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    };</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160; </div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keyword">struct </span>slopeParabolicBlending</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    {</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;        <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> value( <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1,</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;            <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;        {</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;            <span class="keywordflow">return</span> qwtSlopeParabolicBlending( dx1, dy1, s1, dx2, dy2, s2 );</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        }</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    };</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="keyword">struct </span>slopePChip</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    {</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> value( <span class="keywordtype">double</span> dx1, <span class="keywordtype">double</span> dy1, <span class="keywordtype">double</span> s1,</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            <span class="keywordtype">double</span> dx2, <span class="keywordtype">double</span> dy2, <span class="keywordtype">double</span> s2 )</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        {</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;            <span class="keywordflow">return</span> qwtSlopePChip( dx1, dy1, s1, dx2, dy2, s2 );</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        }</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    };</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;}</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="keyword">template</span>&lt; <span class="keyword">class</span> Slope &gt;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeP3(</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keyword">const</span> QPointF&amp; p1, <span class="keyword">const</span> QPointF&amp; p2, <span class="keyword">const</span> QPointF&amp; p3 )</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;{</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dx1 = p2.x() - p1.x();</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dy1 = p2.y() - p1.y();</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dx2 = p3.x() - p2.x();</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dy2 = p3.y() - p2.y();</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160; </div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keywordflow">return</span> Slope::value( dx1, dy1, dy1 / dx1, dx2, dy2, dy2 / dx2 );</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;}</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160; </div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeAkima( <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> s2, <span class="keywordtype">double</span> s3, <span class="keywordtype">double</span> s4 )</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;{</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordflow">if</span> ( ( s1 == s2 ) &amp;&amp; ( s3 == s4 ) )</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">return</span> 0.5 * ( s2 + s3 );</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> ds12 = qAbs( s2 - s1 );</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> ds34 = qAbs( s4 - s3 );</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160; </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keywordflow">return</span> ( s2 * ds34 + s3 * ds12 ) / ( ds12 + ds34 );</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;}</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160; </div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtSlopeAkima( <span class="keyword">const</span> QPointF&amp; p1, <span class="keyword">const</span> QPointF&amp; p2,</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keyword">const</span> QPointF&amp; p3, <span class="keyword">const</span> QPointF&amp; p4, <span class="keyword">const</span> QPointF&amp; p5 )</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;{</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> s1 = qwtSlopeLine( p1, p2 );</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> s2 = qwtSlopeLine( p2, p3 );</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> s3 = qwtSlopeLine( p3, p4 );</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> s4 = qwtSlopeLine( p4, p5 );</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160; </div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="keywordflow">return</span> qwtSlopeAkima( s1, s2, s3, s4 );</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;}</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="keyword">template</span>&lt; <span class="keyword">class</span> Slope &gt;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> qwtSplineBoundariesL1(</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_spline_local.html">QwtSplineLocal</a>* spline, <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points,</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    <span class="keywordtype">double</span>&amp; slopeBegin, <span class="keywordtype">double</span>&amp; slopeEnd )</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;{</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> n = points.size();</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <span class="keyword">const</span> QPointF* p = points.constData();</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160; </div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keywordflow">if</span> ( ( spline-&gt;<a class="code" href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">boundaryType</a>() == <a class="code" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171">QwtSpline::PeriodicPolygon</a> )</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;        || ( spline-&gt;<a class="code" href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">boundaryType</a>() == <a class="code" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1">QwtSpline::ClosedPolygon</a> ) )</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    {</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        <span class="keyword">const</span> QPointF pn = p[0] - ( p[n - 1] - p[n - 2] );</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        slopeBegin = slopeEnd = qwtSlopeP3&lt; Slope &gt;( pn, p[0], p[1] );</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    }</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    {</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = qwtSlopeP3&lt; Slope &gt;( p[0], p[1], p[2] );</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        slopeBegin = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">slopeAtBeginning</a>( points, m2 );</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160; </div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> mn2 = qwtSlopeP3&lt; Slope &gt;( p[n - 3], p[n - 2], p[n - 1] );</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        slopeEnd = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">slopeAtEnd</a>( points, mn2 );</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    }</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;}</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160; </div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="keyword">template</span>&lt; <span class="keyword">class</span> SplineStore, <span class="keyword">class</span> Slope &gt;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> SplineStore qwtSplineL1(</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_spline_local.html">QwtSplineLocal</a>* spline, <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points )</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;{</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> size = points.size();</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    <span class="keyword">const</span> QPointF* p = points.constData();</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160; </div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    <span class="keywordtype">double</span> slopeBegin, slopeEnd;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    qwtSplineBoundariesL1&lt; Slope &gt;( spline, points, slopeBegin, slopeEnd );</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160; </div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keywordtype">double</span> m1 = slopeBegin;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160; </div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    SplineStore store;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    store.init( points );</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    store.start( p[0], m1 );</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keywordtype">double</span> dx1 = p[1].x() - p[0].x();</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="keywordtype">double</span> dy1 = p[1].y() - p[0].y();</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keywordtype">double</span> s1 = dy1 / dx1;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160; </div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 1; i &lt; size - 1; i++ )</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    {</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> dx2 = p[i + 1].x() - p[i].x();</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> dy2 = p[i + 1].y() - p[i].y();</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160; </div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        <span class="comment">// cardinal spline doesn&#39;t need the line slopes, but</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <span class="comment">// the compiler will eliminate pointless calculations</span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s2 = dy2 / dx2;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160; </div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = Slope::value( dx1, dy1, s1, dx2, dy2, s2 );</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160; </div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;        store.addCubic( p[i - 1], m1, p[i], m2 );</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160; </div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        dx1 = dx2;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        dy1 = dy2;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        s1 = s2;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        m1 = m2;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    }</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160; </div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    store.addCubic( p[size - 2], m1, p[size - 1], slopeEnd );</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; </div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    <span class="keywordflow">return</span> store;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;}</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160; </div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> qwtSplineAkimaBoundaries(</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_spline_local.html">QwtSplineLocal</a>* spline, <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points,</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    <span class="keywordtype">double</span>&amp; slopeBegin, <span class="keywordtype">double</span>&amp; slopeEnd )</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;{</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> n = points.size();</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    <span class="keyword">const</span> QPointF* p = points.constData();</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160; </div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    <span class="keywordflow">if</span> ( ( spline-&gt;<a class="code" href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">boundaryType</a>() == <a class="code" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171">QwtSpline::PeriodicPolygon</a> )</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        || ( spline-&gt;<a class="code" href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">boundaryType</a>() == <a class="code" href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1">QwtSpline::ClosedPolygon</a> ) )</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    {</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        <span class="keyword">const</span> QPointF p2 = p[0] - ( p[n - 1] - p[n - 2] );</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        <span class="keyword">const</span> QPointF p1 = p2 - ( p[n - 2] - p[n - 3] );</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160; </div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        slopeBegin = slopeEnd = qwtSlopeAkima( p1, p2, p[0], p[1], p[2] );</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    }</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160; </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    <span class="keywordflow">if</span> ( spline-&gt;<a class="code" href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">boundaryCondition</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">QwtSpline::AtBeginning</a> ) == <a class="code" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028">QwtSpline::Clamped1</a></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        &amp;&amp; spline-&gt;<a class="code" href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">boundaryCondition</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">QwtSpline::AtEnd</a> ) == <a class="code" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028">QwtSpline::Clamped1</a> )</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    {</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        slopeBegin = spline-&gt;<a class="code" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">QwtSpline::AtBeginning</a>);</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;        slopeEnd = spline-&gt;<a class="code" href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">boundaryValue</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">QwtSpline::AtEnd</a> );</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160; </div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    }</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;    <span class="keywordflow">if</span> ( n == 3 )</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;    {</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s1 = qwtSlopeLine( p[0], p[1] );</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s2 = qwtSlopeLine( p[1], p[2] );</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m = qwtSlopeAkima( 0.5 * s1, s1, s2, 0.5 * s2 );</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160; </div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        slopeBegin = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">slopeAtBeginning</a>( points, m );</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        slopeEnd = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">slopeAtEnd</a>( points, m );</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    }</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    {</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;        <span class="keywordtype">double</span> s[3];</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160; </div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        s[0] = qwtSlopeLine( p[0], p[1] );</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;        s[1] = qwtSlopeLine( p[1], p[2] );</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;        s[2] = qwtSlopeLine( p[2], p[3] );</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = qwtSlopeAkima( 0.5 * s[0], s[0], s[1], s[2] );</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160; </div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        slopeBegin = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">slopeAtBeginning</a>( points, m2 );</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160; </div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        s[0] = qwtSlopeLine( p[n - 4], p[n - 3] );</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;        s[1] = qwtSlopeLine( p[n - 3], p[n - 2] );</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        s[2] = qwtSlopeLine( p[n - 2], p[n - 1] );</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160; </div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> mn2 = qwtSlopeAkima( s[0], s[1], s[2], 0.5 * s[2] );</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160; </div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        slopeEnd = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">slopeAtEnd</a>( points, mn2 );</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    }</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;}</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160; </div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="keyword">template</span>&lt; <span class="keyword">class</span> SplineStore &gt;</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> SplineStore qwtSplineAkima(</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_spline_local.html">QwtSplineLocal</a>* spline, <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points )</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;{</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> size = points.size();</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;    <span class="keyword">const</span> QPointF* p = points.constData();</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160; </div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;    <span class="keywordtype">double</span> slopeBegin, slopeEnd;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    qwtSplineAkimaBoundaries( spline, points, slopeBegin, slopeEnd );</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160; </div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;    <span class="keywordtype">double</span> m1 = slopeBegin;</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    SplineStore store;</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;    store.init( points );</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;    store.start( p[0], m1 );</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160; </div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    <span class="keywordtype">double</span> s2 = qwtSlopeLine( p[0], p[1] );</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;    <span class="keywordtype">double</span> s3 = qwtSlopeLine( p[1], p[2] );</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;    <span class="keywordtype">double</span> s1 = 0.5 * s2;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160; </div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i &lt; size - 3; i++ )</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    {</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s4 = qwtSlopeLine( p[i + 2],  p[i + 3] );</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160; </div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = qwtSlopeAkima( s1, s2, s3, s4 );</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;        store.addCubic( p[i], m1, p[i + 1], m2 );</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160; </div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;        s1 = s2;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        s2 = s3;</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        s3 = s4;</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160; </div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        m1 = m2;</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    }</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160; </div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = qwtSlopeAkima( s1, s2, s3, 0.5 * s3 );</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160; </div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;    store.addCubic( p[size - 3], m1, p[size - 2], m2 );</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    store.addCubic( p[size - 2], m2, p[size - 1], slopeEnd );</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160; </div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    <span class="keywordflow">return</span> store;</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;}</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160; </div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;<span class="keyword">template</span>&lt; <span class="keyword">class</span> SplineStore &gt;</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> SplineStore qwtSplineLocal(</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_spline_local.html">QwtSplineLocal</a>* spline, <span class="keyword">const</span> <a class="code" href="class_q_vector.html">QVector&lt; QPointF &gt;</a>&amp; points )</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;{</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    SplineStore store;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160; </div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> size = points.size();</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    <span class="keywordflow">if</span> ( size &lt;= 1 )</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        <span class="keywordflow">return</span> store;</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160; </div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;    <span class="keywordflow">if</span> ( size == 2 )</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    {</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> s0 = qwtSlopeLine( points[0], points[1] );</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m1 = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">slopeAtBeginning</a>( points, s0 );</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> m2 = spline-&gt;<a class="code" href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">slopeAtEnd</a>( points, s0 );</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160; </div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        store.init( points );</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;        store.start( points[0], m1 );</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;        store.addCubic( points[0], m1, points[1], m2 );</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160; </div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;        <span class="keywordflow">return</span> store;</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;    }</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160; </div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    <span class="keywordflow">switch</span>( spline-&gt;<a class="code" href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">type</a>() )</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    {</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad691c00c49d088f841cb3068ba960b41">QwtSplineLocal::Cardinal</a>:</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        {</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;            <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;            store = qwtSplineL1&lt; SplineStore, slopeCardinal &gt;( spline, points );</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        }</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad4323015af5b06447bd4a6ac84c60f3c">QwtSplineLocal::ParabolicBlending</a>:</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        {</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;            store = qwtSplineL1&lt; SplineStore, slopeParabolicBlending &gt;( spline, points );</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        }</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407acf64689481d8f90d5cbc2fa4e7a08958">QwtSplineLocal::PChip</a>:</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        {</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;            <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;            store = qwtSplineL1&lt; SplineStore, slopePChip &gt;( spline, points );</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        }</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407a119134ba7624f50c37a57cdd7a862dc2">QwtSplineLocal::Akima</a>:</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;        {</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;            store = qwtSplineAkima&lt; SplineStore &gt;( spline, points );</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;        }</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    }</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160; </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    <span class="keywordflow">return</span> store;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;}</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160; </div>
<div class="line"><a name="l00450"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#abd008f03f1c466d2f8c9358ad3772874">  450</a></span>&#160;<a class="code" href="class_qwt_spline_local.html#abd008f03f1c466d2f8c9358ad3772874">QwtSplineLocal::QwtSplineLocal</a>( <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407">Type</a> type )</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;    : m_type( type )</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;{</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;    <a class="code" href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">setBoundaryCondition</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">QwtSpline::AtBeginning</a>, <a class="code" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a">QwtSpline::LinearRunout</a> );</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    <a class="code" href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">setBoundaryValue</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">QwtSpline::AtBeginning</a>, 0.0 );</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160; </div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;    <a class="code" href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">setBoundaryCondition</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">QwtSpline::AtEnd</a>, <a class="code" href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a">QwtSpline::LinearRunout</a> );</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;    <a class="code" href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">setBoundaryValue</a>( <a class="code" href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">QwtSpline::AtEnd</a>, 0.0 );</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;}</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160; </div>
<div class="line"><a name="l00461"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#a40032cd1cab6e9ec600bbbd7849988a3">  461</a></span>&#160;<a class="code" href="class_qwt_spline_local.html#a40032cd1cab6e9ec600bbbd7849988a3">QwtSplineLocal::~QwtSplineLocal</a>()</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;{</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;}</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160; </div>
<div class="line"><a name="l00468"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">  468</a></span>&#160;<a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407">QwtSplineLocal::Type</a> <a class="code" href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">QwtSplineLocal::type</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;    <span class="keywordflow">return</span> m_type;</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;}</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160; </div>
<div class="line"><a name="l00482"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#aaf946d9c3fce948f4cab2d950b13c16a">  482</a></span>&#160;QPainterPath <a class="code" href="class_qwt_spline_local.html#aaf946d9c3fce948f4cab2d950b13c16a">QwtSplineLocal::painterPath</a>( <span class="keyword">const</span> QPolygonF&amp; points )<span class="keyword"> const</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_spline.html#a6aa6f2c0b844e6a27284aa474c6bca7b">parametrization</a>()-&gt;<a class="code" href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">type</a>() == <a class="code" href="class_qwt_spline_parametrization.html#aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24">QwtSplineParametrization::ParameterX</a> )</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;    {</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;        <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;        <span class="keywordflow">return</span> qwtSplineLocal&lt; PathStore &gt;( <span class="keyword">this</span>, points).path;</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;    }</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160; </div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_spline_c1.html#a79a63604fbbdc82dc2d39ecc4e32df80">QwtSplineC1::painterPath</a>( points );</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;}</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160; </div>
<div class="line"><a name="l00502"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#af41043d3b8c664c99f3c38a9f6e8c141">  502</a></span>&#160;<a class="code" href="class_q_vector.html">QVector&lt; QLineF &gt;</a> <a class="code" href="class_qwt_spline_local.html#af41043d3b8c664c99f3c38a9f6e8c141">QwtSplineLocal::bezierControlLines</a>( <span class="keyword">const</span> QPolygonF&amp; points )<span class="keyword"> const</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_spline.html#a6aa6f2c0b844e6a27284aa474c6bca7b">parametrization</a>()-&gt;<a class="code" href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">type</a>() == <a class="code" href="class_qwt_spline_parametrization.html#aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24">QwtSplineParametrization::ParameterX</a> )</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    {</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        <span class="keywordflow">return</span> qwtSplineLocal&lt; ControlPointsStore &gt;( <span class="keyword">this</span>, points ).controlPoints;</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;    }</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160; </div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_spline_c1.html#a95bd3ff76fa0975f07b2351f4194e60e">QwtSplineC1::bezierControlLines</a>( points );</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;}</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160; </div>
<div class="line"><a name="l00521"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#af86995e3805a71c68a623145044d36c2">  521</a></span>&#160;<a class="code" href="class_q_vector.html">QVector&lt; double &gt;</a> <a class="code" href="class_qwt_spline_local.html#af86995e3805a71c68a623145044d36c2">QwtSplineLocal::slopes</a>( <span class="keyword">const</span> QPolygonF&amp; points )<span class="keyword"> const</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    <span class="keyword">using namespace </span>QwtSplineLocalP;</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    <span class="keywordflow">return</span> qwtSplineLocal&lt; SlopeStore &gt;( <span class="keyword">this</span>, points ).slopes;</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;}</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160; </div>
<div class="line"><a name="l00537"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#afcf07ad4628e9b5cab639e3c7a0e64e7">  537</a></span>&#160;<a class="code" href="class_q_vector.html">QVector&lt; QwtSplinePolynomial &gt;</a> <a class="code" href="class_qwt_spline_local.html#afcf07ad4628e9b5cab639e3c7a0e64e7">QwtSplineLocal::polynomials</a>( <span class="keyword">const</span> QPolygonF&amp; points )<span class="keyword"> const</span></div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;    <span class="comment">// Polynomial store -&gt; TODO</span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_spline_c1.html#ae5e92c78b70b85393533c752ac3bd543">QwtSplineC1::polynomials</a>( points );</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;}</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160; </div>
<div class="line"><a name="l00552"></a><span class="lineno"><a class="line" href="class_qwt_spline_local.html#a76371196a0f089b7aaebafb691bbd7ce">  552</a></span>&#160;uint <a class="code" href="class_qwt_spline_local.html#a76371196a0f089b7aaebafb691bbd7ce">QwtSplineLocal::locality</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;    <span class="keywordflow">switch</span> ( m_type )</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;    {</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407a119134ba7624f50c37a57cdd7a862dc2">Akima</a>:</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;        {</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;            <span class="comment">// polynomials: 2 left, 2 right</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;            <span class="keywordflow">return</span> 2;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;        }</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad691c00c49d088f841cb3068ba960b41">Cardinal</a>:</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad4323015af5b06447bd4a6ac84c60f3c">ParabolicBlending</a>:</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407acf64689481d8f90d5cbc2fa4e7a08958">PChip</a>:</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;        {</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;            <span class="comment">// polynomials: 1 left, 1 right</span></div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;            <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;        }</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    }</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160; </div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_spline.html#a8530fa87bf65a42492014b50614d0595">QwtSplineC1::locality</a>();</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;}</div>
<div class="ttc" id="aclass_q_vector_html"><div class="ttname"><a href="class_q_vector.html">QVector</a></div><div class="ttdef"><b>Definition:</b> <a href="qwt__clipper_8h_source.html#l00023">qwt_clipper.h:23</a></div></div>
<div class="ttc" id="aclass_qwt_spline_c1_html_a4befa20c7cc5bed3f3f14d52ff639f48"><div class="ttname"><a href="class_qwt_spline_c1.html#a4befa20c7cc5bed3f3f14d52ff639f48">QwtSplineC1::slopeAtBeginning</a></div><div class="ttdeci">virtual double slopeAtBeginning(const QPolygonF &amp;, double slopeNext) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00979">qwt_spline.cpp:979</a></div></div>
<div class="ttc" id="aclass_qwt_spline_c1_html_a79a63604fbbdc82dc2d39ecc4e32df80"><div class="ttname"><a href="class_qwt_spline_c1.html#a79a63604fbbdc82dc2d39ecc4e32df80">QwtSplineC1::painterPath</a></div><div class="ttdeci">virtual QPainterPath painterPath(const QPolygonF &amp;) const override</div><div class="ttdoc">Calculate an interpolated painter path.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l01043">qwt_spline.cpp:1043</a></div></div>
<div class="ttc" id="aclass_qwt_spline_c1_html_a95bd3ff76fa0975f07b2351f4194e60e"><div class="ttname"><a href="class_qwt_spline_c1.html#a95bd3ff76fa0975f07b2351f4194e60e">QwtSplineC1::bezierControlLines</a></div><div class="ttdeci">virtual QVector&lt; QLineF &gt; bezierControlLines(const QPolygonF &amp;) const override</div><div class="ttdoc">Interpolate a curve with Bezier curves.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l01101">qwt_spline.cpp:1101</a></div></div>
<div class="ttc" id="aclass_qwt_spline_c1_html_a9fed720ae4d5d4e6ea6c8e3727587e5e"><div class="ttname"><a href="class_qwt_spline_c1.html#a9fed720ae4d5d4e6ea6c8e3727587e5e">QwtSplineC1::slopeAtEnd</a></div><div class="ttdeci">virtual double slopeAtEnd(const QPolygonF &amp;, double slopeBefore) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00997">qwt_spline.cpp:997</a></div></div>
<div class="ttc" id="aclass_qwt_spline_c1_html_ae5e92c78b70b85393533c752ac3bd543"><div class="ttname"><a href="class_qwt_spline_c1.html#ae5e92c78b70b85393533c752ac3bd543">QwtSplineC1::polynomials</a></div><div class="ttdeci">virtual QVector&lt; QwtSplinePolynomial &gt; polynomials(const QPolygonF &amp;) const</div><div class="ttdoc">Calculate the interpolating polynomials for a non parametric spline.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l01201">qwt_spline.cpp:1201</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024"><div class="ttname"><a href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa0efcdb6fbf1e583097ec297b43f26024">QwtSpline::AtBeginning</a></div><div class="ttdeci">@ AtBeginning</div><div class="ttdoc">the condition is at the beginning of the polynomial</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00102">qwt_spline.h:102</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55"><div class="ttname"><a href="class_qwt_spline.html#a21cca305dad4f1e21437953c4801595aa633399daff8a04d92e61ca776e878e55">QwtSpline::AtEnd</a></div><div class="ttdeci">@ AtEnd</div><div class="ttdoc">the condition is at the end of the polynomial</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00106">qwt_spline.h:105</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a3a51db25eb5f3e4716fe172ae3ca35ec"><div class="ttname"><a href="class_qwt_spline.html#a3a51db25eb5f3e4716fe172ae3ca35ec">QwtSpline::boundaryValue</a></div><div class="ttdeci">double boundaryValue(BoundaryPosition) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00682">qwt_spline.cpp:682</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a6306d24451d24f16d30880b9114d3052"><div class="ttname"><a href="class_qwt_spline.html#a6306d24451d24f16d30880b9114d3052">QwtSpline::setBoundaryCondition</a></div><div class="ttdeci">void setBoundaryCondition(BoundaryPosition, int condition)</div><div class="ttdoc">Define the condition for an endpoint of the spline.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00639">qwt_spline.cpp:639</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a6aa6f2c0b844e6a27284aa474c6bca7b"><div class="ttname"><a href="class_qwt_spline.html#a6aa6f2c0b844e6a27284aa474c6bca7b">QwtSpline::parametrization</a></div><div class="ttdeci">const QwtSplineParametrization * parametrization() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00605">qwt_spline.cpp:605</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a77de5f694c70a7c0b34a02c04093fcee"><div class="ttname"><a href="class_qwt_spline.html#a77de5f694c70a7c0b34a02c04093fcee">QwtSpline::boundaryCondition</a></div><div class="ttdeci">int boundaryCondition(BoundaryPosition) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00651">qwt_spline.cpp:651</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a7f5f43e9e83fd23210ac528802c0496d"><div class="ttname"><a href="class_qwt_spline.html#a7f5f43e9e83fd23210ac528802c0496d">QwtSpline::boundaryType</a></div><div class="ttdeci">BoundaryType boundaryType() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00626">qwt_spline.cpp:626</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_a8530fa87bf65a42492014b50614d0595"><div class="ttname"><a href="class_qwt_spline.html#a8530fa87bf65a42492014b50614d0595">QwtSpline::locality</a></div><div class="ttdeci">virtual uint locality() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00564">qwt_spline.cpp:564</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_ac14c58e4301b85732c97a4daaf7a9b8b"><div class="ttname"><a href="class_qwt_spline.html#ac14c58e4301b85732c97a4daaf7a9b8b">QwtSpline::setBoundaryValue</a></div><div class="ttdeci">void setBoundaryValue(BoundaryPosition, double value)</div><div class="ttdoc">Define the boundary value.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8cpp_source.html#l00670">qwt_spline.cpp:670</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1"><div class="ttname"><a href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128a63108a1fe17778b7d9c236efc17774b1">QwtSpline::ClosedPolygon</a></div><div class="ttdeci">@ ClosedPolygon</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00093">qwt_spline.h:92</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171"><div class="ttname"><a href="class_qwt_spline.html#ad82b1f33946d2489511f5e697a32b128aeec4576967e31745e7d96d3a8a016171">QwtSpline::PeriodicPolygon</a></div><div class="ttdeci">@ PeriodicPolygon</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00079">qwt_spline.h:79</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a"><div class="ttname"><a href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba6ad4241cc59f456d77eb70b289e5782a">QwtSpline::LinearRunout</a></div><div class="ttdeci">@ LinearRunout</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00154">qwt_spline.h:153</a></div></div>
<div class="ttc" id="aclass_qwt_spline_html_af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028"><div class="ttname"><a href="class_qwt_spline.html#af2195032fa62c2b9fe74dc4d44b636cba94d03f64008ad0ed1e2e92bd96414028">QwtSpline::Clamped1</a></div><div class="ttdeci">@ Clamped1</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline_8h_source.html#l00125">qwt_spline.h:125</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html"><div class="ttname"><a href="class_qwt_spline_local.html">QwtSplineLocal</a></div><div class="ttdoc">A spline with C1 continuity.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00024">qwt_spline_local.h:25</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a1b65106f91b7cdbc7a389f3389041407"><div class="ttname"><a href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407">QwtSplineLocal::Type</a></div><div class="ttdeci">Type</div><div class="ttdoc">Spline interpolation type.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00034">qwt_spline_local.h:35</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a1b65106f91b7cdbc7a389f3389041407a119134ba7624f50c37a57cdd7a862dc2"><div class="ttname"><a href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407a119134ba7624f50c37a57cdd7a862dc2">QwtSplineLocal::Akima</a></div><div class="ttdeci">@ Akima</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00053">qwt_spline_local.h:53</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a1b65106f91b7cdbc7a389f3389041407acf64689481d8f90d5cbc2fa4e7a08958"><div class="ttname"><a href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407acf64689481d8f90d5cbc2fa4e7a08958">QwtSplineLocal::PChip</a></div><div class="ttdeci">@ PChip</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00063">qwt_spline_local.h:62</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a1b65106f91b7cdbc7a389f3389041407ad4323015af5b06447bd4a6ac84c60f3c"><div class="ttname"><a href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad4323015af5b06447bd4a6ac84c60f3c">QwtSplineLocal::ParabolicBlending</a></div><div class="ttdeci">@ ParabolicBlending</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00048">qwt_spline_local.h:48</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a1b65106f91b7cdbc7a389f3389041407ad691c00c49d088f841cb3068ba960b41"><div class="ttname"><a href="class_qwt_spline_local.html#a1b65106f91b7cdbc7a389f3389041407ad691c00c49d088f841cb3068ba960b41">QwtSplineLocal::Cardinal</a></div><div class="ttdeci">@ Cardinal</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8h_source.html#l00042">qwt_spline_local.h:42</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a40032cd1cab6e9ec600bbbd7849988a3"><div class="ttname"><a href="class_qwt_spline_local.html#a40032cd1cab6e9ec600bbbd7849988a3">QwtSplineLocal::~QwtSplineLocal</a></div><div class="ttdeci">virtual ~QwtSplineLocal()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00461">qwt_spline_local.cpp:461</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a5cb4f022abee9d29f6f7ef6b670df776"><div class="ttname"><a href="class_qwt_spline_local.html#a5cb4f022abee9d29f6f7ef6b670df776">QwtSplineLocal::type</a></div><div class="ttdeci">Type type() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00468">qwt_spline_local.cpp:468</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_a76371196a0f089b7aaebafb691bbd7ce"><div class="ttname"><a href="class_qwt_spline_local.html#a76371196a0f089b7aaebafb691bbd7ce">QwtSplineLocal::locality</a></div><div class="ttdeci">virtual uint locality() const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00552">qwt_spline_local.cpp:552</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_aaf946d9c3fce948f4cab2d950b13c16a"><div class="ttname"><a href="class_qwt_spline_local.html#aaf946d9c3fce948f4cab2d950b13c16a">QwtSplineLocal::painterPath</a></div><div class="ttdeci">virtual QPainterPath painterPath(const QPolygonF &amp;) const override</div><div class="ttdoc">Interpolate a curve with Bezier curves.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00482">qwt_spline_local.cpp:482</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_abd008f03f1c466d2f8c9358ad3772874"><div class="ttname"><a href="class_qwt_spline_local.html#abd008f03f1c466d2f8c9358ad3772874">QwtSplineLocal::QwtSplineLocal</a></div><div class="ttdeci">QwtSplineLocal(Type type)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00450">qwt_spline_local.cpp:450</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_af41043d3b8c664c99f3c38a9f6e8c141"><div class="ttname"><a href="class_qwt_spline_local.html#af41043d3b8c664c99f3c38a9f6e8c141">QwtSplineLocal::bezierControlLines</a></div><div class="ttdeci">virtual QVector&lt; QLineF &gt; bezierControlLines(const QPolygonF &amp;) const override</div><div class="ttdoc">Interpolate a curve with Bezier curves.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00502">qwt_spline_local.cpp:502</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_af86995e3805a71c68a623145044d36c2"><div class="ttname"><a href="class_qwt_spline_local.html#af86995e3805a71c68a623145044d36c2">QwtSplineLocal::slopes</a></div><div class="ttdeci">virtual QVector&lt; double &gt; slopes(const QPolygonF &amp;) const override</div><div class="ttdoc">Find the first derivative at the control points.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00521">qwt_spline_local.cpp:521</a></div></div>
<div class="ttc" id="aclass_qwt_spline_local_html_afcf07ad4628e9b5cab639e3c7a0e64e7"><div class="ttname"><a href="class_qwt_spline_local.html#afcf07ad4628e9b5cab639e3c7a0e64e7">QwtSplineLocal::polynomials</a></div><div class="ttdeci">virtual QVector&lt; QwtSplinePolynomial &gt; polynomials(const QPolygonF &amp;) const override</div><div class="ttdoc">Calculate the interpolating polynomials for a non parametric spline.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__local_8cpp_source.html#l00537">qwt_spline_local.cpp:537</a></div></div>
<div class="ttc" id="aclass_qwt_spline_parametrization_html_aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24"><div class="ttname"><a href="class_qwt_spline_parametrization.html#aa63256420483fa4981452127366cb48da3eaba94a692d4e23a0714db3288a6a24">QwtSplineParametrization::ParameterX</a></div><div class="ttdeci">@ ParameterX</div><div class="ttdef"><b>Definition:</b> <a href="qwt__spline__parametrization_8h_source.html#l00054">qwt_spline_parametrization.h:54</a></div></div>
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